Hyper-Threading Compatibility

Hey all, I have a Shuttle AV41 motherboard with 512 mb of RAM, a 2.66 ghz Celeron CPU, a 40 gigabyte hard drive, and a Radeon 9600 256 mb graphics card. I am wondering if I can dump my Celeron and get a P4 with HT, I don't care if the HT works, I just need another processor with a larger L2 cache, mine is only at 124, as opposed to a P4s 512. thanks, please email me with your respone at chunkylover91@hotmail